[Recommendation of the working group commissioned by the French Nuclear Safety Authority on stereotactic radiation therapy].

Purpose: At the request of the French nuclear safety authority (Autorité de Sûreté Nucléaire, ASN) a working party of multidisciplinary experts was initiated to elaborate a report regarding propositions for the clinical practice of stereotactic radiation therapy and the related medical physics.

Material And Methods: Several stereotactic radiation therapy experts were audited by the working party, especially neurosurgeons and neuroradiologists, as well as radiation oncologists, medical physicists and radiation technologists. An international survey was conducted looking at legal requirements and guidelines concerning stereotactic radiation therapy.

[Helical CT pelvimetry: advantages of a low dose volume acquisition technique].

The authors evaluate the accuracy of a new CT pelvimetry technique that allows faster and low dose acquisition, and provides an axial view of the true conjugate as well as a 3D view of the maternal pelvis. Made possible by the availability of MDCT, this new technique may be a good alternative to standard CT pelvimetry even if MR pelvimetry still appears as the gold standard.